使用“expdp”在Oracle中导出序列

Question

I am using the following command to export my sequence to a dump file in Oracle:

expdp user/pwd DIRECTORY=user_exp DUMPFILE=morder.dmp  include=sequence:HR.EMPLOYEES 

where EMPLOYEES is my sequence name. However, I get this error:

ORA-39001 invalid argument value
ORA-39071 Value for INCLUDE is badly formed
ORA-00920 invalid relational operator

Can someone please guide about this? What am I doing wrong?

Answer 1

The object name clause has to be enclosed in double-quotes, and has to have a relational operator :

The name_clause is optional. It allows fine-grained selection of specific objects within an object type. It is a SQL expression used as a filter on the object names of the type. It consists of a SQL operator and the values against which the object names of the specified type are to be compared. The name_clause applies only to object types whose instances have names (for example, it is applicable to TABLE, but not to GRANT). It must be separated from the object type with a colon and enclosed in double quotation marks, because single quotation marks are required to delimit the name strings.

But it also can't include a schema name; it just has to be an object name. If you are connecting to expdp as the HR user then that's the default anyway and you can do:

expdp hr/pwd DIRECTORY=user_exp DUMPFILE=morder.dmp include=sequence:"= 'EMPLOYEES'"

If you're connecting as a different, privileged, user you need to include the schemas clause, or it won't be able to find the object:

expdp system/pwd DIRECTORY=user_exp DUMPFILE=morder.dmp schemas=hr include=sequence:"= 'EMPLOYEES'"

Depending on your operating system you may need to escape various things:

Depending on your operating system, the use of quotation marks when you specify a value for this parameter may also require that you use escape characters. Oracle recommends that you place this parameter in a parameter file, which can reduce the number of escape characters that might otherwise be needed on the command line. See "Use of Quotation Marks On the Data Pump Command Line" .

On Linux/bash the include clause ends up as:

... include=sequence:\"= \'EMPLOYEES\'\" 

with both the double-quotes and single-quotes escaped. From a previous question you may be on Windows, where I only the double-quotes need to be escaped:

... include=sequence:\"= 'EMPLOYEES'\" 

Finally, EMPLOYEES looks like a table name; you probably really want EMPLOYEES_SEQ :

... include=sequence:\"= 'EMPLOYEES_SEQ'\" 

Answer 2

In case you want to export sequence from specific SCHEMA use this:

expdp user/pwd SCHEMAS=HR DIRECTORY=user_exp DUMPFILE=morder.dmp include=sequence:EMPLOYEES

(add SCHEMAS and remove the owner od the sequence)

Answer 3

Here is the copy/paste from my environment:

[oracle@testsrv ~]$ expdp uuu/uuu schemas=uuu DIRECTORY=dir1 DUMPFILE=morder3.dmp  include=sequence

Export: Release 12.1.0.2.0 - Production on Mon Nov 16 22:16:59 2015

Copyright (c) 1982, 2014, Oracle and/or its affiliates.  All rights reserved.

Connected to: Oracle Database 12c Enterprise Edition Release 12.1.0.2.0 - 64bit Production
With the Partitioning, OLAP, Advanced Analytics and Real Application Testing options
Starting "UUU"."SYS_EXPORT_SCHEMA_01":  uuu/******** schemas=uuu DIRECTORY=dir1 DUMPFILE=morder3.dmp include=sequence 
Estimate in progress using BLOCKS method...
Total estimation using BLOCKS method: 0 KB
Processing object type SCHEMA_EXPORT/SEQUENCE/SEQUENCE
Master table "UUU"."SYS_EXPORT_SCHEMA_01" successfully loaded/unloaded
******************************************************************************
Dump file set for UUU.SYS_EXPORT_SCHEMA_01 is:
  /home/oracle/morder3.dmp
Job "UUU"."SYS_EXPORT_SCHEMA_01" successfully completed at Mon Nov 16 22:17:03 2015 elapsed 0 00:00:03

[oracle@testsrv ~]$